Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 138 insertions, 0 deletions

diff --git a/src/VBox/Runtime/r0drv/haiku/spinlock-r0drv-haiku.c b/src/VBox/Runtime/r0drv/haiku/spinlock-r0drv-haiku.c
new file mode 100644
index 00000000..b1f70f37
--- /dev/null
+++ b/src/VBox/Runtime/r0drv/haiku/spinlock-r0drv-haiku.c
@@ -0,0 +1,138 @@
+/* $Id: spinlock-r0drv-haiku.c $ */
+/** @file
+ * IPRT - Spinlocks, Ring-0 Driver, Haiku.
+ */
+
+/*
+ * Copyright (C) 2012-2019 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "the-haiku-kernel.h"
+#include "internal/iprt.h"
+#include <iprt/spinlock.h>
+
+#include <iprt/assert.h>
+#include <iprt/asm.h>
+#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
+#include <iprt/asm-amd64-x86.h>
+#endif
+#include <iprt/errcore.h>
+#include <iprt/mem.h>
+#include <iprt/thread.h>
+
+#include "internal/magics.h"
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+/**
+ * Wrapper for the KSPIN_LOCK type.
+ */
+typedef struct RTSPINLOCKINTERNAL
+{
+    /** Spinlock magic value (RTSPINLOCK_MAGIC). */
+    uint32_t volatile     u32Magic;
+    /** Spinlock creation flags */
+    uint32_t              fFlags;
+    /** Saved interrupt CPU status. */
+    cpu_status volatile   fIntSaved;
+    /** The Haiku spinlock structure. */
+    spinlock              hSpinLock;
+} RTSPINLOCKINTERNAL, *PRTSPINLOCKINTERNAL;
+
+
+
+RTDECL(int)  RTSpinlockCreate(PRTSPINLOCK pSpinlock, uint32_t fFlags, const char *pszName)
+{
+    RT_ASSERT_PREEMPTIBLE();
+    NOREF(pszName);
+
+    /*
+     * Allocate.
+     */
+    AssertCompile(sizeof(RTSPINLOCKINTERNAL) > sizeof(void *));
+    PRTSPINLOCKINTERNAL pSpinlockInt = (PRTSPINLOCKINTERNAL)RTMemAllocZ(sizeof(*pSpinlockInt));
+    if (RT_UNLIKELY(!pSpinlockInt))
+        return VERR_NO_MEMORY;
+
+    /*
+     * Initialize & return.
+     */
+    pSpinlockInt->u32Magic  = RTSPINLOCK_MAGIC;
+    pSpinlockInt->fFlags    = fFlags;
+    pSpinlockInt->fIntSaved = 0;
+    B_INITIALIZE_SPINLOCK(&pSpinlockInt->hSpinLock);
+
+    *pSpinlock = pSpinlockInt;
+    return VINF_SUCCESS;
+}
+
+
+RTDECL(int)  RTSpinlockDestroy(RTSPINLOCK Spinlock)
+{
+    /*
+     * Validate input.
+     */
+    PRTSPINLOCKINTERNAL pSpinlockInt = (PRTSPINLOCKINTERNAL)Spinlock;
+    if (RT_UNLIKELY(!pSpinlockInt))
+        return VERR_INVALID_PARAMETER;
+    AssertMsgReturn(pSpinlockInt->u32Magic == RTSPINLOCK_MAGIC,
+                    ("Invalid spinlock %p magic=%#x\n", pSpinlockInt, pSpinlockInt->u32Magic),
+                    VERR_INVALID_PARAMETER);
+
+    /*
+     * Make the lock invalid and release the memory.
+     */
+    ASMAtomicIncU32(&pSpinlockInt->u32Magic);
+
+    B_INITIALIZE_SPINLOCK(&pSpinlockInt->hSpinLock);
+
+    RTMemFree(pSpinlockInt);
+    return VINF_SUCCESS;
+}
+
+
+RTDECL(void) RTSpinlockAcquire(RTSPINLOCK Spinlock)
+{
+    PRTSPINLOCKINTERNAL pSpinlockInt = (PRTSPINLOCKINTERNAL)Spinlock;
+    AssertPtr(pSpinlockInt);
+    Assert(pSpinlockInt->u32Magic == RTSPINLOCK_MAGIC);
+
+    /* Haiku cannot take spinlocks without disabling interrupts. Ignore our spinlock creation flags. */
+    pSpinlockInt->fIntSaved = disable_interrupts();
+    acquire_spinlock(&pSpinlockInt->hSpinLock);
+}
+
+
+RTDECL(void) RTSpinlockRelease(RTSPINLOCK Spinlock)
+{
+    PRTSPINLOCKINTERNAL pSpinlockInt = (PRTSPINLOCKINTERNAL)Spinlock;
+    AssertPtr(pSpinlockInt);
+    Assert(pSpinlockInt->u32Magic == RTSPINLOCK_MAGIC);
+
+    release_spinlock(&pSpinlockInt->hSpinLock);
+    restore_interrupts(pSpinlockInt->fIntSaved);
+}
+